Blowpipe.



' R. W. MAGNA & L. G. W. CARPENTER.

' BLOWPIPE.

APPLICATION FILED we; 17, 1909.

Wm M A WITNESS/5S:-

X. g E I l d A TTORNEYJ. v

R. W. MAGNA & L. G. W. CARPENTER.

BLOWPIPE.

APPLICATION FILED we. 17, 1909.

969,487; Patented Sept. 6, 19 10.

2 SHEETS-BEBE! 2.

VII/m I I'l WITNESSES I INVENTORS;

be E A Trolezv m'.

RUSSELL W. MAGNA, OF HOE FORE, MASSACHUSETTS. AND LOUIS G. W. GARI?IFJICLIZIR,

tilt" PHILADELPHIA, PENNSYLVANIA.

BLOW'PIPE.

scenes. H

Application tiled. Augustus, 19%, Serial Nb. 513,231.

To all whom it may concem:

Be it known that we, RUSSELL W. MAGNA, residing at Holyoke, in thecounty of Hampden and State of Massachusetts, and Louis G. WV.CARPENTER, residing at Philadelphia, in the county of Philadelphia andState of Pennsylvania, both citizens of the United States of America,have jointly ins vented a new and useful Blowpipe, of which thefollowing is a specification.

Our invention relates to improvements in burners of the blow-pipevariety which are adapted to mix and burn a combustible gas and a gasthat supports combustion, oxygen and acetylene gases being those usuallyemployed; and said invention consists of a peculiarly constructed mixerand burner mounted on two tubular members one Withthe other, togetherwith a valve for the instantaneous control of the oxygen, and suchauxiliary and subsidiary parts and members as may be needed-to renderthe device complete, including a so-called cutting attachment which isprovided with a valve,

all as hereinafter set forth.

The objects of our invention are, first, to provide a simple and com actoily-acetylene blow-pipe in which and with which combusduce a flame oftion of said gases is obtained at a temperature suliiciently high forall practical pur poses, that is to say, these gases when burned withthis burner or blow-pipe prosuch intense heating capacity orgreutfervency that the device canbe employed in the same-Way and'to equal ifnot greater. advantageas are other devices of thistttype, for soldering,brazing, welding,

cutting, and otherwise operating and acting upon various kinds of metal;second, to produce such a blow-pipe which possesses a wide range ofcapacity, whereby the same is enabled to meet the demands made upon itin the diversified uses to which it may be put in the various arts inwhich it may be emiloved" third, to )roducc a blow-n; 1e

that will operate successfully with all re.- quired sizes of flames, sothat it is not neces- ,sary to-provide a number of blowpipes fordiiierent kinds of work; fourth. to aii'ord means to take care offlash-backs when-- .which embodies ever they occur in this blow-pipe sothatthey are rendered entirely harmless; fifth,

to furnish means for regulating and controlling the gases which passthrough said blow-pipe so as to make the latter prac-i ticable andefiicient in all particulars, and, sixth, to provide a blowpipe that caneasily be kept 1n order. l/Ve attain these objects ing drznvings, inwhich-- -Figure 1 is a central longitudinal section through the majorportion of a blow-pipe a practical form ofour invention; Fig. 2, anenlarged section taken on lines 2-2, looking in the direction of thearrow in Fig. 1; Fig. 3, a partial section and elevation of the lowerportion of the device, as shown in the first View, enlarged; Fig. at, aside elevation of said blow-pipe and the cutting attachment; Fig. .5,asimila'r elevation Without said attachment; Fig. 6, an enlarged topplan of the cutting-attach- Speciflcatidmbi Etters Patent. PatentedSept. 6, 1910.

by the means illustrated in the accompanymentnozzle; Fig. 7, an enlargedlongitudinal section through such nozzle, the elbow being omitted, and,Fig. 8, an enlarged. s tion of the cutting-attachment valve-casing, withthe valve in place.

Similar figures refer to throughout the several views.

Starting with parallel twin conduits 1 and 3, the formerfor acetyleneand the latter for oxygen, which are in practice connected by suitablepipes (not shown) with adequate sources of gas supply, and which similarparts are common to other types of oxyacety- There is also a tube 11which practicable to keep the device clean and in' proper repair.

The valve-casing 6 consists partly of a screw-plug 12, and in the casingthus formed is a chamber 13 from which a passage 14' leads into openconnection with the upper end of the conduit 3. and a second passage- 15leads into open connection with the lower end of the tube 11, with avalve-seat 16 between such passages. A double-faced valve 17 in thechamber 13 is adapted to close either the valve-seat 16. or a valve-seat18 in spring 21 until said valve comes to rest on i duit .3 iscompletely shut off, none being 1 ered by.wire-gauze-2 said chamber onthe opposite side of the passage 15 from said seat 16. The valve 17 hasa stem 19'slidiiigly mounted in the valve-casing 6 and provided on itsouter end with a knob or button 20'for convenience in operating.said,,,stem and valve; A spring 21, in the chambeij. 13 betweenthejinner'face of the valve .-17 add. the opposite end of said chamber,normally retains said valve in contact with the seat 18. Practically theonly object of the valve-seat 18 and the coacting or associated part ofthe valve 17 is to afford a tight joint around the valve-stem 19, whensaid valve is normallydisposed or open, and thus avoid a stufiing-box orother packing for said stem. p

VVhen the valve-stem l9'with its valve is forced inward against theresiliency of the the valvevseat 16, the oxygen from the conable to passfrom that part of the' chamber 13 into which the passage 1% opens intothat part of said chamber from which the .passage 15 leads, but as soonas said valve-stem is released said spring opens said valve and soclears the way for the free fiowof the gas. w

,The lower terminal of the tube 11 extends through the union 7 into anopening or rece'ss made in the upper end of'the valve-casing 6 toreceive it, and a tight joint 'between said tube at this point and saidunion and valve-casing is obtained by means of packing 22. The upperterminal of the tubell extends into and opens into a central chamber. 23in the headlO.

a passage .25v leads from,"the vicinity' of the upper end of the conduit1, with which said passage. is in. openconnection, to said chamber intowhich it. opens at the top. The chamber 24 communicates with theinterior of the casing 8 throng an opening 26"cov-,

stance, the -tube 11 passes through the In the present in-- chamber 24as well as other 'parts of the union, 7. Within the casing 8 is a loosefilling 28 of asbestos or other material which is capable of preventingor rather of nullifying the effects of back firing so that no harm isdone thereby. By furnishing a comparatively large area of filled spaceintermediate of the'gas-inlet conduits and the burner proper, room isaiiorded for the expansion of the gases when there is a-flash-back andample provision made for completely extin- .guishing the flame andpreventing fire from getting into the gas passages below the easing 8.The wire-gauze 27 prevents thelfilling 28 from getting into the chamber24 and so clogging tliepassage 25, and .a perfoto the under sidethereof'and situated the top of the casing 8 performs a similar servicefor the tube 9; these foraminous'menibers together with said filling.also strain the acetylene gas and remove all *impurities from it. p

The head 10 may be constructed'in any suitable manner, there being-inthis case,

in addition 'to the head proper, an extension 31 at the front-endand'two plugs-:32 at the sides. As just intimated, however, the methodof constructing'the he'ad: is' not important 'so far as our inventionisconcerned, providedsaid head be 'fadequate'fer our purpose. Withintheheadxis thechamber 23," which consistsv of a straight-passage havinga downwardlyextending branch into which the tube 11 opens, two chambers33 at the sides, into which the tube 9 opens through Vertical Passagesand a mixin chamber 35 into which said chambers +33 open throughpassages 36,..the majorj'portion of said chamber 35. being in.theextension 31. The head and its parts, with the exception of thedepending-.-portioninto which the tubes 9 and'11 are'screwed, arepreferably arranged obliquelyz substantially :'a"s,;,shown.v Either anordinary nozzle 37 or a cutting nozzle 45 is screwed into the front is apassage 46' constructed at the'outer end end ofthe extension 31',*ineach of which zles having diiferent sized orifices at their\ tips" areemployed for difieriit kinds 'of .work which require flames of difierentsizes. Aninjector, nozzle 38', having a;v'alve-seat 39 for aneedle-valve 40,-is screwed into the A chamber 24 is provided'in'theupper part ofthe union 7, within the casing 9, and

front end of the chambe'r' 23.. The needlevalve 40 is in threaded engaemenLWith the'sides ofthe chamber 23-bac of-the nozzle 38, a tight jointbetween-the head 10 and said needle-valve bein means 'of' a cap 4]. andac 42. The needle-yalve 40 is operate by. a nob 43 on the outer end ofthe same in the usual man-- ner. The passage through the nozzle' 38opens through the valve-seat 39 into an formed by 80 I rated disk 29having wire-gauze 30 secured :54, Figs. 1 and 56,;Eig. -7, which is10115.;fl01ll said ends of the tubes 47 and 48, and is provided 60-"place 1 annular-recess 44 in the front end of said nozzle-.-

\ 'lhe cutting attachment, which is used when the blow-pipe is employedfor cutting 5; purposes. comprises, 1n addition to the nozzle 45,pipes47 and 48, a valve-casing 49 and valve '50, two elbows 51, andtwocoupling nuts 52. The union ,7 is in'ovided on one side. with anipple 53 which opens at 3, into the oxygen passage leis-said union,for' the lower elbow 51, and the-11oz e 45 is provided with a nippletor-jthe upper/elbowfil. There is a passage parallel with the pasageyttl.in the nozzle 45. The passage 56 opens at its inner ,end into thenipple 55,

and atfits outerend through the tip of the nozzle 45 like the passage46in saidnozzle. Adjacent ends of valve-casing 49. The

casing (i: ,It consists in part of a screw-plug 57,; has a chamber 58therein and. two passages-j 59- ind 60 leading in oppos te d1recchamberto the adpzcent with n; valve-seat :61 between the inner ends ofiisuchpassages for the valve 50. The valve 50;,hasajsten1 62 slidingly mountedin the ,vaflve'-'casing 49 and provided on its outer enduvithflaknob orbutton 63. The valve 50' -heldenonnally on its seat 61 by a spring 64-.

64," and the; valve. 50 thus removed from t e valveseatfil, the oxygenfrom the union 7 base clear passage to the passage 56, in the nozzlesff, by way of the tnbe47, passage 59, 40. chamber and shuts off the Howof oxygen to said pas;

sage:5(l,since none can now pass from that 45 .pa rtpf said chamber intowhich thepassage filli opens into that part of said chamberfrompwlnclrthe passage (30 leads. 1 See Fig.

8. ,rlhe'opening and closing of the'valve 50- doesnot appreciablyail'ect the flow of oxy- 50.51011 through the tube 11.

The (zoupling-nutsfiQ aflord ready means forconnecting the tubes 47 and,48, with the rvalvecasiug 49, to and disconnecting themifrom the un on7 and the nozzle 45,

55*sand -rthe latter can be as readil 'remo'ved from the extension 31and attached thereto as'c n the nozzle 37. A screw-cap (i5 isused'g-toyclosethe outer end of the nipple 53 who the. cuttingattachmentis not in In practice, assuming: that the cutting-attachiiieut. is notneeded and has been discom nccted, the proper sized nozzle 37 isselected and attached to the extension 31, the needlethe-tubes 47 and 48are {Whenthe valve-stem 62 is forced inward a ingagainst the resiliencyof the sprin '16 and theoxygen thus cut oli'.

sprlu 21 and the How of valve is adjusted to regulate the oxygen andpermit only the right amount of this gas to flow into. themixing-chamber 35, and the valves L and 5 are opened. The acetylene gasnow flows from the conduit .1, through the passage 25', chamber 24,opening 26, easing 8, tube 9, passages 34, chambers 33. and passages 36into the mixingmhmnber 35; and the oxygen flows-from the con duit 3,through the passage 14, chamber 13, passage 15, tube 11. chamber 23, andinjector nozzle 38 into said mixing-elminber. From the mixing-chamberthe mixture passes out through the nozzle 37 and being ignited at thetip of said nozzle asit issues therefrom burns with great fervency andimpinging force. The b its flame in the usual manner.

are, of course, under pressure.

When the blow-pipe is to be used for outting'purnoses, the attachmentbereinlmt'ore described is connected to the rest of the device in themanner explained, the nozzle beingsubstituted for the nozzle 37, and theadditional jet of oxygen gas obtained forthe flame produced from themixture of the two gases which escape through the passage :(l,

- when the valve is opened, such jet escap- 111,1, through'the passage56. The gases sup piled by this double nozzle in this way areexceedingly eflective, when in a state of co nbusti'on, for cuttingmetal of any reasonable thickness in a most ethcient manner. The valve5O insures perfect control and automatically shuts oil? the auxiliaryoxygen supply. Usually, for the sake of convenience. we prefer todisconnect the cutting attaeh-' ment, when the device is not to be usedfor cutting "purposes."

In the event that a flash-back occurs the valve]? is nnmedlal'elypressed onto the seat When the bacl re has exhausted itselt in thecasing 8, fllve 17 is released and opened by the oxygen permitted to cori-nue.

At the completion of the work tlic valves 4 and 5 are closed, combustionceases, and the device is laid aside until required again.

By employing a needle-valve iu-our construction the necessity ofproviding a number of injector nozzles is avoided. The mixiug'ot thegases in the chamber 3.) takes place in much the same "way as-in similardevices; although the of the gases is more. thorough and the combinationmore efficient owing to the presence of the recess 44- and the generalconstruction of the head and its equipment;

It quite obvious that various changes in' shape, size, and constructionof some or all of the parts of the device herein illustrated anddescribed may be made without depart ing from the nature of ourinvention.

low pipe is now usedto apply. The gasesintermiugling to y a through thelatter with' the conduitupou What We claim as our invention, and de sireto secure by Letters Patent, is'-' I V 1'. A blow-pipecomprisin fachambered head, two gas. conduits provided with valves, members arrangedto form passageways for" gas, one of such passageways being within theother for, a greater portion of itslength and both of such passagewaysopening at! one end into said head and at the otherend' into saidconduits respectively, a normally-. open emergency valve arranged in'oneof the passageways between the valve in ,th'conduit with which thisparticularpassageway is connected and the head, and a 'valvefarranged inthe headto control the gas from the-inner passageway. 7 h r v U 2. Ablowpipe comprising 'suitabl fgas'" conduits, consisting in part ofawake-casing having ofiset passages and'an intermediate] valve-seattherein, tubular members connccted with one of said conduits and 'formf;in" a passageway for" the 'gastherenom,a

. tubular member Within such passageway .andconnected with theother'of'sald con-- tubular members, and a valve inthe head'it'oregulate th 0w of gas from, said inner tii-"z bular member. "'f 1 3. Ablow-pipe comprising a chambered' head, two gas conduits, membersarranged to form a passageway for gas which'passage way opens at one endinto said head and at the other end into one of said conduits,"a loosefilling in a portion of such passageway to form a flash-backcompartmenhfand'a' tube within said passageway which tube also opeps atone end into said head but at the opposite end into the other of saidconduits.

4. The combination, in a blow-pipe, of two gas conduits provided'withva1ves,"a valvecasing mounted on one of suclrcoriduits, union mounted onsaid valve casin gand the, other of said "conduits, tubular meinbers'fmounted on said union and connecting which the union is directlymounted, a tube,

in said tubular members and connectingth'roughthe valve casing 'Withithe conduit upon which "said casing moiinted, a valve in thecasing nlapted to "close chap sage; way from said tube to thei'conduiflbeloiv,

I means to retainsaid valve n'oi'r'ha'lly' open so as to leavesi1cl1"passage\vay"ffeyand'a' chambered head mountetbon said tubularmembers-' c 5. A blow-pipe comprising a'chainbered" head, two gasconduits, members arranged to form a passageway for gas which passagewayopens at one end into said head and at the otherv end into one of-saidconduits,

one off said tubular members constituting 'a casing and having a loosefilling therein with 'forami'nous' members at the ends to form a flashback compartment and to serve 'as a strainer for the gas,which passesthrough the same, and a tube ,wi thin said end into said head'but at theopposite end into theother ofsaidconduits. "'6, A blow-pipe comprising achambered to forma passageway for gas which assages y opens at one endinto said head and at "the other end'i'nto one of said conduits, a tube:within such passageway which tube also opens at ,oneendinto said headbut at the opposite end 'into the other of said conhaving a passagewhich opens at its'inner head, and outside members arranged to form; apassagewa for gas leading from one of the gas'con Hits to theoutsideopenfing in said nozzle back of the tip.

"head, two gas conduits, members arranged to form a passageway for gaswhich passageway opens at one end mto said head -"duits, a tube withinsuch passageway which itube also opens at oneend into said head but atthe opposite end into the other'of Isaid conduits, a nozzle connectedwith the head=and having a passa e which opens at its inner end into thehea and a second passage which opens'at its inner end outside of saidlast-mentioned passageway,

sa eway opens at one end into said head and at the other end into one ofsaid conduits,

also opens at one end into said head but at 'the oppositeend into theother of said conwhich at its' inner end through one members arranged toform a -passageway 'tothe sidd opcning in said nozzle. I v a 9.Thccombination, 1n a blow-pipe, of a;

which passageway opens at one end into head, twd'gas conduits, membersarranged and at the other end into one of said c0nthe head, outsidemembers arranged to form, a'passa'geway for gas leading from one of thegas conduits to the outside opening in the nozzle backbf the tip, and avalve in passageway which tube also opens at one "du'its, a nozzleconnected withthe head and 'end gintothe head" and a secondpassagewhichiopens at its inner endjoutside of the,

7; A blow-pipe comprising a chambered 8, Afib1'ow;pipe compr s ngachambered head, two gas conduits, members arranged f toform a passagewayfor gas which pas-Q a tnbe'within'such' passageway which tube I I,duits, a detachable rioz'zle for the'head, such nozzle having a passageto open at its inner a v end into thehead and a second passage "side of'the nozzle, "and outside detachable" or'gas to lead from one of saidg'asconduitsi I I 7 chambered head, two gas conduits, 'members arranged toform a passageway for gas said head and at the other end into one} tip,a valve in said last-mentioned assageof said conduits, a tube Withinsuch passage Way, and means to retain said va ve norway which tube alsoopens one end into mally in its closed position.

said head but at the opposite end into the RUSSELL r MAGNA other of saideonduits.- a nozzle connected m with the head and having a passage whichLOUIS X' N E opens at its inner end into the head and wlmessesmtoslgnature of a second passage which opens at its inner R end outside ofthe head, outside mem- FAIRBANKS- bers arranged to form a passageway forgas Witnesses to signature ofIL. G. C. leading from one of the gasconduits to the l ISAAC C. SUTTON,

outside opening in said nozzle back of the 1 AsAHnL W. GAGE.

